Biology important Solved MCQs for class 10 student’s pdf download. Student get excellent Grades in Board Matric exam after preparation Online Biology Quiz. Biology Multiple Choice Questions.
Class 10th – Biology Chapter No.1 GASEOUS EXCHANGE Quiz 2 MCQs Online Quiz
All MCQs Selected from Old Papers and Matric Book
Best MCQs for Board Exams
Total MCQs ( in this Quiz ) = 50
51. Function of cartilage rings in trachea:
A. keep the trachea from collapsing
B. keep the trachea straight in shape
C. to manage air in trachea
D. to manage air function
Answer:
A. keep the trachea from collapsing
52. On entering chest cavity, trachea is divided into:
A. many small tubes called bronchi
B. one large tube called bronchi
C. un-countable tubes called alveoli
D. two smaller tubes called bronchi
Answer:
D. two smaller tubes called bronchi
53. Bronchi have in their walls
A. fibrous plates
B. cartilaginous plates
C. hard partitions
D. bony plates
Answer:
B. cartilaginous plates
54. Epiglottis is:
A. a membrane
B. a tissue which guards pharynx
C. a membrane present in the trachea
D. a flap of tissue which guards the glottis
Answer:
D. A flap of tissue which guards the glottis
55. What are alveoli?
A. alveoli are tiny cells
B. alveoli are large blood vessels
C. alveoli are tiny blood vessels
D. alveoli are tiny sacs in the lungs
Answer:
D. alveoli are tiny sacs in the lungs
